Car alarm key chain



FIG. 1 is a front elevational view of a car alarm key chain showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

The broken line showings in FIGS. 1 and 2 form no part of the claimed design. 

The ornamental design for a car alarm key chain, as shown and described. 